The CARMENES search for exoplanets around M dwarfs: Nine new double-line spectroscopic binary stars

Abstract

Context. The CARMENES spectrograph is surveying ~300 M dwarf stars in search for exoplanets. Among the target stars, spectroscopic binary systems have been discovered, which can be used to measure fundamental properties of stars. Aims. Using spectroscopic observations, we determine the orbital and physical properties of nine new double-line spectroscopic binary systems by analysing their radial velocity curves. Methods. We use two-dimensional cross-correlation techniques to derive the radial velocities of the targets, which are then employed to determine the orbital properties. Photometric data from the literature are also analysed to search for possible eclipses and to measure stellar variability, which can yield rotation periods. Results. Out of the 342 stars selected for the CARMENES survey, 9 have been found to be double-line spectroscopic binaries, with periods ranging from 1.13 to ~8000 days and orbits with eccentricities up to 0.54. We provide empirical orbital properties and minimum masses for the sample of spectroscopic binaries. Absolute masses are also estimated from mass-luminosity calibrations, ranging between ~0.1 and ~0.6 Msol . Conclusions. These new binary systems increase the number of double-line M dwarf binary systems with known orbital parameters by 15%, and they have lower mass ratios on average.

arXiv commentAccepted for publication in A&A. 17 pages, 4 figures

References in corpus (58)

• emcee: The MCMC Hammer
• The Gaia mission
• Gaia Data Release 2: The astrometric solution
• A new extensive library of PHOENIX stellar atmospheres and synthetic spectra
• New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit
• Accurate masses and radii of normal stars: modern results and applications
• The WASP Project and the SuperWASP Cameras
• The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)
• A box-fitting algorithm in the search for periodic transits
• SB9: The Ninth Catalogue of Spectroscopic Binary Orbits
• Northern Sky Variability Survey (NSVS): Public data release
• Absolute dimensions of the M-type eclipsing binary YY Geminorum (Castor C): a challenge to evolutionary models in the lower main-sequence
• Spectrum radial velocity analyser (SERVAL). High-precision radial velocities and two alternative spectral indicators
• The HARPS-TERRA project I. Description of the algorithms, performance and new measurements on a few remarkable stars observed by HARPS
• The rotation and Galactic kinematics of mid M dwarfs in the Solar Neighborhood
• A Spectroscopic Catalog of the Brightest (J<9) M Dwarfs in the Northern Sky
• The CARMENES search for exoplanets around M dwarfs: High-resolution optical and near-infrared spectroscopy of 324 survey stars
• On the angular momentum evolution of fully-convective stars: rotation periods for field M-dwarfs from the MEarth transit survey
• The astrometric core solution for the Gaia mission. Overview of models, algorithms and software implementation
• The Solar Neighborhood XXXVII: The Mass-Luminosity Relation for Main Sequence M Dwarfs
• CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS
• The Mass-Radius(-Rotation?) Relation for Low-Mass Stars
• Absolute properties of the low-mass eclipsing binary CM Draconis
• GU Boo: A New 0.6 Msun Detached Eclipsing Binary
• Transit Detection in the MEarth Survey of Nearby M Dwarfs: Bridging the Clean-First, Search-Later Divide
• The effect of magnetic activity on low-mass stars in eclipsing binaries
• Cross-Correlation and Maximum Likelihood Analysis: A New Approach to Combine Cross-Correlation Functions
• Magnetic Inhibition of Convection and the Fundamental Properties of Low-Mass Stars. I. Stars with a Radiative Core
• The CARMENES search for exoplanets around M dwarfs. First visual-channel radial-velocity measurements and orbital parameter updates of seven M-dwarf planetary systems
• LSPM J1112+7626: detection of a 41-day M-dwarf eclipsing binary from the MEarth transit survey
• CARMENES input catalogue of M dwarfs: III. Rotation and activity from high-resolution spectroscopic observations
• Accounting for velocity jitter in planet search surveys
• Observational Evidence for Tidal Interaction in Close Binary Systems
• Tidal Synchronization and Differential Rotation of Kepler Eclipsing Binaries
• Magnetic Inhibition of Convection and the Fundamental Properties of Low-Mass Stars. II. Fully Convective Main Sequence Stars
• CARMENES input catalogue of M dwarfs IV. New rotation periods from photometric time series
• CARMENES input catalogue of M dwarfs II. High-resolution imaging with FastCam
• The CARMENES search for exoplanets around M dwarfs - Photospheric parameters of target stars from high-resolution spectroscopy
• Spectroscopic binaries in a sample of ROSAT X-ray sources south of the Taurus molecular clouds
• The CARMENES search for exoplanets around M dwarfs: A low-mass planet in the temperate zone of the nearby K2-18
• GJ 3236: a new bright, very low-mass eclipsing binary system discovered by the MEarth observatory
• The Mass Ratio Distribution in Main-Sequence Spectroscopic Binaries Measured by IR Spectroscopy
• 2MASS J05162881+2607387: A New Low-Mass Double-Lined Eclipsing Binary
• The CARMENES search for exoplanets around M dwarfs: Radial-velocity variations of active stars in visual-channel spectra
• The CARMENES search for exoplanets around M dwarfs - HD 147379b: A nearby Neptune in the temperate zone of an early-M dwarf
• Discovery and characterisation of detached M-dwarf eclipsing binaries in the WFCAM Transit Survey
• Dynamical Mass of GJ 802B: a brown dwarf in a triple system
• K2 Discovery of Young Eclipsing Binaries in Upper Scorpius: Direct Mass and Radius Determinations for the Lowest Mass Stars and Initial Characterization of an Eclipsing Brown Dwarf Binary
• A New Low-Mass Eclipsing Binary from SDSS-II
• Luminosity Discrepancy in the Equal-Mass, Pre--Main Sequence Eclipsing Binary Par 1802: Non-Coevality or Tidal Heating?
• A New Detached M Dwarf Eclipsing Binary
• A highly unequal-mass eclipsing M-dwarf binary in the WFCAM Transit Survey
• The Factory and the Beehive III: PTFEB132.707+19.810, a Low-Mass Eclipsing Binary in Praesepe Observed by PTF and K2
• Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - IV. A 0.61 + 0.45 M_sun binary in a multiple system
• Studies of multiple stellar systems - IV. The triple-lined spectroscopic system Gliese 644
• A Bright Short Period M-M Eclipsing Binary from the KELT Survey: Magnetic Activity and the Mass-Radius Relationship for M-dwarfs
• HAT-TR-318-007: a double-lined M-dwarf binary with total secondary eclipses discovered by HATNet and observed by K2
• 44 New & Known M Dwarf Multiples In The SDSS-III/APOGEE M Dwarf Ancillary Science Sample

Cited by in corpus (27)

• The CARMENES search for exoplanets around M dwarfs: Different roads to radii and masses of the target stars
• CARMENES input catalogue of M dwarfs V. Luminosities, colours, and spectral energy distributions
• The CARMENES search for exoplanets around M dwarfs -- Planet occurrence rates from a subsample of 71 stars
• The 10 parsec sample in the Gaia era
• The CARMENES search for exoplanets around M dwarfs. Activity indicators at visible and near-infrared wavelengths
• CARMENES input catalogue of M dwarfs IV. New rotation periods from photometric time series
• The CARMENES search for exoplanets around M dwarfs. Stellar atmospheric parameters of target stars with SteParSyn
• The CARMENES search for exoplanets around M dwarfs. Guaranteed time observations Data Release 1 (2016-2020)
• The CARMENES search for exoplanets around M dwarfs -- Photospheric parameters of target stars from high-resolution spectroscopy. II. Simultaneous multiwavelength range modeling of activity insensitive lines
• The CARMENES search for exoplanets around M dwarfs. Radial velocities and activity indicators from cross-correlation functions with weighted binary masks
• RV-detected planets around M dwarfs: Challenges for core accretion models
• A detailed analysis of the Gl 486 planetary system
• The CARMENES search for exoplanets around M dwarfs. Mapping stellar activity indicators across the M dwarf domain
• The Volume-Complete Sample of M Dwarfs with Masses 0.1 <= M/M_sol <= 0.3 within 15 Parsecs
• The Solar Neighborhood XLIX: New Discoveries and Orbits of M Dwarf Multiples with Speckle Interferometry at SOAR
• Spectroscopic orbits of nearby stars
• The CARMENES search for exoplanets around M dwarfs: Not-so-fine hyperfine-split vanadium lines in cool star spectra
• Spectroscopic Orbits of Eleven Nearby, Mid-to-Late M Dwarf Binaries
• The CARMENES search for exoplanets around M dwarfs. Telluric absorption corrected high S/N optical and near-infrared template spectra of 382 M dwarf stars
• The CARMENES search for exoplanets around M dwarfs: Spectroscopic orbits of nine M-dwarf multiple systems, including two triples, two brown dwarf candidates, and one close M-dwarf-white dwarf binary
• The CARMENES search for exoplanets around M dwarfs. Variability on long timescales as seen in chromospheric indicators
• The CARMENES search for exoplanets around M dwarfs. Diagnostic capabilities of strong K I lines for photosphere and chromosphere
• The CARMENES search for exoplanets around M dwarfs. Behaviour of the Paschen lines during flares and quiescence
• Binaries masses and luminosities with Gaia DR3
• Weighing stars from birth to death: mass determination methods across the HRD
• Low-mass and sub-stellar eclipsing binaries in stellar clusters
• Constraints on the Spindown of Fully-Convective M Dwarfs Using Wide Field Binaries